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H. C. GILMER AND P. L. ROOKLEDGE.

ELECTRIC WARMING DEVICE.

APPLICATION FILED FEB 5. 1919.

Patented Oct. 28, 1919.

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HAMET c. ormvrnn AND rnncrvan L. ROOKLEDGE, or IroLnrsrnn, CALIFORNIA.

ELECTRIC WARMING nnvrcn.

Application filed February 5, 1919.

about the body of patients in the treatment of various ailments, and its objects are:

First, to provide an electric Warming de vice that is light in weight.

Second, to provide an electric warming device in which the heat is maintained at a proper, uniform temperature for any length of time desired.

Third, to provide an electric Warming de vice that may be manufactured at small cost and onein which the heating element can be changed or renewed easily.

With these and otherobjects in View our invention resides in the novel feature of construction and in the unique arrangement of parts to be hereinafter more fully described and claimed, it being understood that various changes in form, proportion, and minor details of construction may be resorted to within the scope of the appended claims.

For a full understanding of our invention and the merits thereof, reference is to be had to the following description and to the accompanying drawings, forming a part of this specification, in which similar reference characters represent corresponding parts in all the views.

In the drawings:

Figure 1 is .a plan view of our electric warming device, parts broken away.

Fig. 2 is a sectional view online 2-2 of Fig. 1, socket and lamp shown in place, with cord andplug attached.

Fig. 3 is a sectional new online 33 of Fig. 1.

Fig. 4 is a view of another formof our electric Warming device showing thebody portion cast integral and the threaded neck for receiving the insulating bushing.

Fig. 5 is an enlarged sectional view through the neck as indicated on line 55 of Fig. 2.

Fig. 6 is an enlarged, longitudinal, sectional view through the neck and bushing.

Fig. 7 is a sectional view on line 77 of Fig. 4.

Specification of Letters Patent.

Patented Oct. 28, 1919.

Serial No. 275,248.

Fig. 8 is an enlarged view of the insulating bushing showing means for clamping onto the socket.

Fig. 9 is an enlarged view ofthe exteriorly threaded insulating bushing.

Our improved electric warming device, forming the subject matter of the present invention, consists of a flat, bottleshaped body portion 1 made of light weight metal or other suitable heat conducting material, said body portion 1 may be made in two dish shaped parts 1*1 and may either be hinged together by a suitable hinge 2 and "held closed by suitable clamps or fastenings 2 or the parts may be seamed together in various ways common in sheet metal construction, or the body portion 1 may be cast i itegral.

A neck is shown at 3, integral with the body portion 1 and having a restricted opening or passage 3 communicating with the inner chamber 4 of the body portion 1. The neck 3 flares out as it extends outward from one end of the body portion, forming a widened mouth 5 having rounded edges 5*.

A. split bushing, made of. suitable electric insulating material, is shown at 6 adapted to be screwed in or otherwise removably fastened in the restricted opening 3, threads provided for this purpose are shown at 3".3. A shoulder is shown at 3 in the I neck adapted to engage the bushing when type'having means ,for fastening shade holders thereon.

The split insulating bushing is clamped onto the socket, in place of the shadeholder, by means of smallbolts 10.

The distance. the neck .3 extends and flares outward is intended'to be sufficient to protect the socket 9 from contact with the body of a patient or one using the device.

Into the socket 9, and projecting into the inner chamber 4, is screwed a suitable incandescent electric light globe 11 of the tubular type and of a size or strength suitable to develop the heat required.

In case the body portion 1 is made in two parts hinged together, the bushing 6 is then provided with an annular groove 12 on the outer wall, adapted to engage suitable beads in the neck 3, thus binding the bushing in place when the two parts 1 and 1 are fastened together.

An electric light cord is shown at 13 having a plug 14. of the usual type, adapted to be screwed into an electric light socket of a lighting system whereby our device may be connected therewith.

The operation of our device is as follows The bushing 6 is secured to the socket 9 in place of the usual shade holder; a suitable electric light globe 11 is screwed into the socket and then the socket, with the bushing and lamp attached, is secured in place in the neck 3 by screwing into place or clamping the parts together, the lamp globe 11 projecting into the inner chamber 1-. A suitable length of electric light cord is attached to the socket and connected with an electric power lighting system and the lamp 11 lighted.

Radiant heat from the lamp globe is transmitted to the body portion 1, thereby keeping it warm or hot, depending upon the size of globe used therein or the amount of electricity allowed to enter said lamp.

Our device may lie flat, stand on end or side, leaning against the body or otherwise be placed about the body of a patient. It being much lighter than the devices for this purpose now in use, it may be placed upon very tender, inflamed or wounded parts of the patient without causing discomforture.

Having thus described our invention what we claim as new and desire to secure by Letters Patent is 1. An electric warming device of the class described consisting of a hollow, metal body portion composed of two dish shaped members hinged together; a neck, half of which is integral with each dish shaped member and forming, when assembled, a restricted opening or passage communicating with the interior of said body portion; a bushing of suitable electric insulating material having an annular groove on the outer wall thereof; a bead in the inner wall of the restricted opening of the neck adapted to engage the groove in the bushing; means carried by the neck for fastening the two dish shaped mem bers together and securing said bushing in place, said bushing being adapted to be clamped onto an electric light socket in place of a shade holder whereby an incandescent electric light globe may be held within said metal body portion, substantially as shown and described.

2. An electric warming device of the class described consisting, in combination with an incandescent electric light socket and globe therefor, of a bottle shaped, hollow, metal body portion, adapted to surround said globe; a neck formed integral with the body portion and having a restricted opening communicating with the interior of said body portion, said neck flaring out as it extends outward from the body portion forming a widened opening adapted to protect the socket; a split bushing composed of suitable insulating material, said bushing being provided with means whereby the same may be clamped to the electric light socket in place of a shade holder and means for removably securing the bushing in the restricted opening in the neck whereby the light globe may be held in place within the body portion, substantially as shown and described.

3. An electric warming device of the class described consisting, in combination with an electric light socket and lamp therefor; of a bottle-shaped, hollow, metal body portion adapted to envelop said lamp; a neck formed integral with said body portion and having an opening communicating with the interior of said body portion, said neck flaring outward as it extends out from one end of the body portion, forming a widened opening adapted to receive and protect the electric light socket; a split bushing composed of insulating material; bolts passing through said bushing, adapted to draw the bushing together whereby the bushing may be clamped onto the electric light socket in place of a shade holder; threads on the outer surface of the bushing; corresponding threads in the neck whereby the bushing may be screwed into said neck; a shoulder at the base of the threads in the neck, adapted to serve as a stop for the bushing to seat against, substantially as shown and described.

In testimony whereof we affix our signatures this 28th day of Jan. 1919.

HAMET C. GILMER. PERCIVAL L. ROOKLEDGE.

Copies of this patent may be obtained for five cents each. by addressing the Commissioner of Patents,

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